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USGS Daily Statistics for Washington

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 12020800 SOUTH FORK CHEHALIS RIVER NEAR WILDWOOD, WA


Lewis County, Washington
Hydrologic Unit Code 17100103
Latitude  46°26'42", Longitude 123°04'57" NAD27
Drainage area 27  square miles
Gage datum 0 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1998-10-01 -> 2024-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 241 298 287 162 38         27 85 254
2 281 264 211 151 37         23 91 302
3 339 224 201 144 36         21 87 523
4 274 211 187 146           19 157 291
5 276 200 178 136           17 131 330
6 522 228 185 144           18 238 245
7 795 243 168 150           19 247 217
8 503 227 166 162           18 145 253
9 356 286 206 140           20 114 269
10 373 206 230 135           24 127 244
11 376 170 237 129           33 139 333
12 476 174 250 131           32 251 366
13 450 154 232 147           34 242 364
14 315 146 226 179           33 360 360
15 264 157 255 160           31 260 370
16 272 190 217 145           37 242 356
17 277 227 189 134           57 308 313
18 356 196 176 122           52 265 316
19 300 188 167 116           52 346 281
20 258 208 171 112           60 311 478
21 265 192 170 108           91 275 347
22 241 224 184 101           104 302 262
23 255 203 153 104           56 311 255
24 279 234 153 127           46 292 253
25 292 196 150 106           51 377 233
26 247 177 164 99           60 258 231
27 229 193 196 100           54 223 308
28 299 312 169 95           73 210 315
29 320 329 221 89           67 211 310
30 367   220 84           57 204 296
31 327   180             100   238